Sept qtr cost of production = $267.28/oz (no, that is not a typo)
June cost of production = $38.21/oz
Company's forecast COP is $17.88, anyway, per slide 11 of the 29th Oct presentation, not the $15 they quote elsewhere.
See
http://hotcopper.com.au/post_threadview.asp?fid=1&tid=2123619&msgno=9856594#9851139
if you want more details.